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Fencer Vulns
critical 9.8

CVE-2026-18808 json

Unauthenticated Remote Code Execution via Code Injection in Klemsan's KIO

published 2026-09-01 2 mo ago modified 2026-09-01 2 mo ago also EUVD-2026-69130

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 47%
public exploits
0
none known

Summary

Improper Control of Generation of Code ('Code Injection') vulnerability in Klemsan Electrical Electronics Inc. KIO (Klemsan Internet Objects) allows Code Injection.

This issue affects KIO (Klemsan Internet Objects): before v1.9.

Patch / fix

  • Klemsan Electrical Electronics Inc. KIO (Klemsan Internet Objects) v1.9

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
total
Assessed
2 mo ago

Exploit prediction

0.56% chance of exploitation in the next 30 days, higher than 47% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Klemsan Electrical Electronics Inc. KIO (Klemsan Internet Objects)

Classification

Weakness
  • CWE-94 Improper Control of Generation of Code

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.